JPS62185958A - Shock absorbing panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a sound-absorbing floor structure, etc. that reduces the transmission of weight impact vibration noise to the floor below when children, etc. jump on the floor in a house, especially an apartment building. This invention relates to the shock absorbing panel used.

(Prior Art) In recent years, impact vibration noise coming from upstairs in apartment complexes has become a major social problem. This impact vibration sound can be roughly divided into light FFI impact sound such as footsteps, and weight impact vibration sound when a child or the like jumps (for example, impact force 3875N, generation 1
m60dB>. Among these, the light ffl impact sound can be easily solved by laying a soft material such as carpet on the floor surface to absorb and soften it.

On the other hand, heavy ffi! i attack 3% IJI sound is, for example, 15
When an impact force of 3,875N is applied to a 0mm thick concrete floor slab, the sound generated on the back side (downstairs in a building) is listed as L-60 in the sound insulation grade according to the Architectural Institute of Japan standards, and is a concern as daily noise. level.

There is a floating floor construction method as a measure to reduce this problem, such as glass wool on the concrete floor slab. There is a wet method (1) in which concrete is poured through 11 butts and a dry method (1) in which pre-fabricated panels are poured in two stages. The former wet type 1
In the law, the Marone grade is L-, which is a level that does not bother you in daily life.
Although it is possible to reduce the cost to 50%, it has the drawbacks of a long construction period and difficulty in applying it to the renovation of existing buildings.
The latter dry method 1 is preferable. However, in the dry method 1 method, for example, on the above-mentioned 1501-thick floor slab, a density of 96h
/+♂, even if glass wool with a thickness of 4Qmm is placed and a concrete panel with a thickness of 5Qmm is placed directly on top of it, the union rating will only be -55, which is a little worrisome, and the noise from daily life will be reduced. It's at a level that doesn't bother me, less than 150,
Preferably, it was not possible to achieve an almost inaudible level of Shi-45.

(Problem to be Solved by the Invention) However, in order to achieve the above-mentioned desired noise level using the dry floating floor construction method, it is necessary to further increase the thickness and weight of the floating floor layer, which increases the floor volume. Particularly in high-rise buildings, this method is disadvantageous in terms of structural design and also has the drawback of deteriorating construction efficiency.

The present invention has been made in view of this point, and its purpose is to reduce the increase in floor ff2ffj by making the panels used as floating floor layers have a vibration absorption structure that utilizes the principle of dynamic vibration absorption 2HB. ? The object of the present invention is to effectively reduce weight impact vibration without causing any damage.

(Means for Solving the Problem) In order to achieve the above object, the solution means of the present invention is to provide a hollow panel body having a hollow part as a shock absorbing panel, and a hollow panel body having a hollow part in contact with the inner wall surface of the hollow part. The structure includes an elastic body disposed in a straight line, and a deformed high-density elongated material supported by the elastic body and at least a portion of which is deformed in the longitudinal direction. Here, the above-mentioned irregularly shaped 1 to 1 vertical strips are formed into a coil shape, a wave shape, a partial block shape, or a small cross-sectional part formed by a notch, etc., and are formed into a shape that is easier to deform than a straight shape. It is something that

(Function) With the above-mentioned configuration, the impact-absorbing panel of the present invention can be used, for example, when placed on a buffer layer such as glass wool, and at the moment impact energy is applied to the panel surface, the entire panel absorbs the impact energy. The panel tries to deform as it tries to move in the direction of the motion. However, since the irregular high-density elongated material supported in the hollow part of the hollow panel body through the elastic body can move through the elastic body, it tries to stay in place due to inertia and causes other deformation. occurs. At that time, since at least a portion of the irregularly shaped and dense long material is formed in an irregular shape in the longitudinal direction, it is more easily deformed due to inertia than a straight material, and the impact energy is transferred within the panel body. Absorbed. As a result, the amount of displacement of the panel body itself in the excitation direction becomes smaller, and the transmission of vibration to the lower surface is reduced, so that the initial generated sound is reduced.

Moreover, since the hollow panel body and the irregular high-density elongated material vibrate at completely different natural frequencies, the generated vibrations are quickly attenuated.

The degree of vibration absorption and vibration damping in the above-mentioned initial stage varies depending on the difference in vibration frequency between the hollow panel body and the irregularly shaped high-density long material, so the support spacing of the long material and its rigidity should be selected appropriately. As a result, the IiT function effectively absorbs vibrations in a predetermined frequency range, and for example, it is possible to reduce the above-mentioned strain impact vibration noise.

In addition, since the structure is mainly made of hollow panels and combined with irregularly shaped high-density long materials, the weight of the panels is reduced.
Handling efficiency 1 Not only will the workability be improved, but it will also contribute to reducing the weight of high-rise buildings.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIGS. 1 and 2 show a shock absorbing panel A+ according to a first embodiment of the present invention, and the panel A1 is used as a vibration-proof flooring material, for example, glass wool layered on a subfloor made of concrete slab or the like. The revised shock absorbing panels A+, A+... are connected and stretched on the tl shock material,
A floating floor structure is constructed by placing a floor covering material such as a carpet on top of the floor covering.

The shock absorbing panel A1 includes a hollow panel body 1 in which hollow portions 2 penetrating the interior are formed in a row in a horizontal row, and holes formed in the hollow portions 2 of the hollow panel body 1 at predetermined intervals in the n direction. an elastic body 4 disposed in contact with the inner wall surface of the hollow part 2; The middle part of the support interval 4 is constituted by a round bar-shaped high-density elongated material 3 formed in a spherical deformed part 3a.

The hollow panel body 1 is formed by integrally molding unhardened cement, calcium silicate, or the like by punching or pouring so that a hollow portion 2 is formed inside.

In addition, the irregularly shaped high-density long material 3 is made by partially providing a lumpy part such as the above-mentioned spherical irregularly-shaped part 3a on a conventional metal round bar or strip-shaped body as described above, and then it is made by inertia. In addition to other metals, it may be made of a resin body mixed with unevenly distributed metal powder such as lead or mineral powder, or a resin body with a metal lump attached to a resin rod. Further, it is preferable that the specific gravity is 2° or more. Furthermore, although the long material 3 is disposed continuously or discontinuously along the hollow part 2, it is better to make it a continuous body because the vibrations peculiar to the long material, that is, the string vibrations, are suppressed, and f in the longitudinal direction and lateral direction of the long material 3
Since the impact energy is dispersed by J vibration 1 FII L, it is preferable that the photographing of panel Δ1 can be more effectively attenuated.

Further, the elastic body 4 is made of an elastic material such as rubber or urethane, and can be easily deformed in order to support the irregularly shaped high-density elongated material 3 so as to vibrate due to inertia.
As shown in the figure, the long material 3 is partially supported by a pond, a hollow part 2
The elongated material 3 is filled and fixed inside the filled elastic body 4.
However, it is preferable to partially support the high-density long material 3 at predetermined intervals as described above because the high-density long material 3 is held in the air and becomes free, making it easier to photograph. .

Therefore, the shock absorbing panel A1 configured in this way
At the moment when the impact energy is applied to its surface, the entire panel AI tries to move in the direction in which the impact energy was applied, and the panel 1 itself also deforms and tries to take a picture. However, in this shock absorbing panel A1, is there an abnormal shape inside the hollow part 2 of the hollow panel body 1? Since the X-density long material 3 is supported via the elastic body 4 and is movable,
The elongated material 3 tries to stay in place due to inertia and undergoes another deformation. In this case, since the deformed high-density elongated material 3 has deformed portions 3a partially formed, the vibratory deformation due to the inertia is more easily carried out by the deformed portions 3a compared to a straight material. As a result, the ffi impact energy is significantly dissipated within the panel AI. the result,
The amount of displacement of panel A+ in the excitation direction is reduced, the transmission of imaging to the lower surface is suppressed, and the initial t111 generated sound is reduced. Furthermore, while the above-mentioned panel A1 is making one movement, the hollow panel 1 and the high-density long material 3 move at completely different natural frequencies, which are canceled out and attenuated within the panel Ai itself. Therefore, the vibration is small and shortened, and the transmission of the image to the floor slab through the glass wool can be suppressed. 1q, in the above embodiment, the irregularly shaped spy long material 3 is partially supported by the elastic body 4 and held in the air, so that the long material 3 is more easily vibrated and deformed and is deformed vertically and horizontally. [11], thereby consuming more impact energy, resulting in a good vibration absorption effect.

Moreover, since the irregularly shaped high-density elongated material 3 is supported in the hollow part 2 of the hollow panel body 1 via the elastic body 4, the elastic body The system of irregularly shaped high-density long material 3 including 4 constitutes a sub-vibration system and acts as a dynamic vibration absorber, and both vibrate at completely different natural frequencies, so that the initial It is possible to absorb vibrations and quickly attenuate imaging. In other words, the absorption and attenuation of the imaging of this -panel A+ changes depending on the difference in the natural frequency between the hollow panel 1 and the long material 3, so the distance between the supports of the long material 3 by the elastic body 4 is By appropriately selecting the rigidity, Φfi, etc. of the long body 3, it is possible to absorb vibrations in the predetermined frequency aA range, and therefore, it is possible to absorb the vibrations of the floor impact vibration 1FJJ sound when a child or the like jumps! I! Hanging impact vibration, etc.

It is possible to effectively dampen vibrations in the low frequency range of 63 to 250 Hz, which was difficult to dampen in the past.

In addition, the irregularly shaped high-density elongated body 3 in each hollow part 2 of the hollow panel body 1 may have different rigidity or weight, or
High-density elongated materials 3 having different imaging systems are disposed in one panel A1 by intermingling irregularly shaped high-density elongated materials 3 with different rigidities and placed horizontally in one hollow part 2. Therefore, it is also possible to absorb vibrations of multiple frequencies at the same time.

Moreover, the above-mentioned panel A1 mainly includes the hollow panel body 1,
This is combined with irregularly shaped high-density long material 3, so
The weight is reduced, which improves its handling and workability, and also contributes to the weight reduction of high-rise pills and the like.

FIGS. 3 and 4 show vfT according to the second embodiment of the present invention.
Percussion acid absorption panel A2, in the case of this example, hollow panel body 1
are slate, calcium silicate board, ALC board, wood α
Double-sided materials 1a and ia are inorganic boards such as cement boards, or veneers or composites of wood boards such as plywood, particle board, and hardboard, and a core material 1b' is placed between the double-sided materials ia and 1a.
4i-The core members 1b and 1b are assembled to form a hollow part 2 at appropriate intervals, and the elongated member 3 is supported within the hollow part 2 between each core member 1b, lb. On the other hand, the irregularly shaped high-density elongated material 3 is composed of an iron coil, and is supported by being embedded in an elastic body 4 made of urethane or the like filled in the hollow part 2.

Therefore, in the case of the shock absorbing panel A2 of the second embodiment, in addition to being able to obtain the same functions and effects as those of the first embodiment, the panel A2 has the advantage of being easy to assemble and manufacture.

In addition, FIG. 5 shows a modification of the irregularly shaped high-density long material 3.
A notch 3c is provided on the side surface of b to facilitate deformation.

(Experiment example) Next, specifically, the above first and second example panels A+
, a specific example of A2 was manufactured. That is, in the panel of the first specific example, the specific gravity of the solid part is 1.4 by extrusion molding,
Wall thickness: 15cm, panel thickness: 70B1, hollow ratio: 40%, dimensions: 91cm
A hollow panel body made of 0x1820w asbestos cement is integrally formed, and an iron round bar (ratio ff! 7.9,
Diameter 9mm.

An elastic body made of urethane foam (dimensions 40 x 40 x 50
mm) was inserted to create a shock absorbing panel. The weight of this panel was approximately 130-.

In addition, as a panel of the second specific example, a piece of wood (dimensions 40 x 40 x 182
0IInll>f Arrange the cores in parallel every 1ooIII11, and place the iron coil (diameter 2.4 order, coil diameter 12 degrees, total length 1820+ny++, number of coil turns 150 turns/m) between these cores so as not to contact the panel body. The panels were then filled with 20x foamed urethane and integrated to form a panel.

The ff1ffi of this panel was about 120-.

On the other hand, a concrete panel (dimensions: 1820 x 910 x 50wnn) was prepared as a comparative example panel in which reinforcing bars with a diameter of 6 mm were arranged at a pitch of 100 WIWl. all of this panel was about 190-.

Then, each of these panels is attached to a concrete slab (density+f
23001=i/m'', thickness 150nm, dimension 5
Glass wool MW material (
96 km/m", thickness 40 mm) to create a floating floor, and a weight impact sound generator specified in JIS-A1418 is applied to the floor. When the sound was measured, it was found that the floating floor using the panels of the first and second embodiments of the present invention achieved L- of the Architectural Institute of Japan standard.
A sound insulation rating of 45 was obtained, whereas a sound insulation rating of L-55 was obtained using the panel of the comparative example, indicating that the panel of the present invention has an excellent vibration damping effect. Also,
The weight of the panel is also reduced as is clear from the above.

(Effects of the Invention) As explained above, according to the shock absorbing panel of the present invention, a deformed high-density elongated material is supported in the hollow part of the hollow panel body through an elastic body, and can be used as a dynamic vibration absorber. This action can effectively absorb floor impact vibrations, especially weight impact vibrations, so the transmission of the heavy FFI gentle surface vibration sound to the downstairs can be easily reduced with a lightweight structure without increasing the floor space. It is possible to provide a floor structure suitable for high-rise buildings.

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention; FIG. 1 is a partially cutaway perspective view of the shock absorbing panel of the first embodiment, FIG. 2 is a sectional view taken along the line ■-■ of FIG. The figure is a partially cutaway perspective view of the rain shock absorbing panel of the second embodiment, and Figure 4 is the rv of Figure 3.
-rv line sectional view, and FIG. 5 is a perspective view showing a modification of the deformed high-density elongated material. DESCRIPTION OF SYMBOLS 1...Hollow panel body, 2...Hollow part, 3...Deformed high-density long material, 4...Elastic body. - Yopa

Claims (3)

[Claims] (1) A hollow panel body having a hollow part, an elastic body disposed within the hollow part in contact with the inner wall surface of the hollow part, and an irregular shape supported by the elastic body and at least a part of which is irregularly shaped in the longitudinal direction. A shock absorbing panel characterized by being made of high-density long material. (2) The impact-absorbing panel according to claim (1), wherein the irregularly shaped high-density elongated material is formed into a coil shape, a wave shape, or a partial block shape. (3) The irregularly shaped high-density elongated material is one in which a small cross-section portion is partially formed by a cutout or the like.
) or (2).